Does it happen often? Or just this once?
You can do a cleaning mid print. Hit pause, goto cleaning... Select the cleaning you want, and it'll auto resume printing when your done.
If it happens a lot... And usually after xx ft, you can goto media settings and set it up to do a cleaning every xx ft - that's probably what Grimco was talking about.
I had the same issues.. perfect nozzles, then after 15 ft my cyan would drop and.there would be bad banding. Grimcos fix was to set it up to do a cleaning every 10 ft... It fixed the issue 99% of the time, but obviously wastes ink.
Epson's recommended fix (and what Grimco follows) is a new head, pump assembly and duct assembly. After weeks of dealing with bad prints and not knowing when in my roll it'd be garbage, I caved and spent the 2k to get it done.
They admitted it's a shotgun approach and I could do it one at a time... But they said most of the time the issues return within a week if it's not all done at once, so it's cheaper in the long run to do it all at once.
It's been a few months and all is working perfectly now, the issue hasn't came back even once. So if it constantly happens... It may be worth looking into.